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mm/slub: Simplify __kmem_cache_alias() 

There is no need to do anything if sysfs_slab_alias() return nonzero
value after getting a mergeable cache.

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Link: https://lore.kernel.org/all/e5ebc952-af17-321f-5343-bc914d47c931@suse.cz/
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Xiongwei Song 2022-05-31 08:55:50 +08:00 committed by Vlastimil Babka
parent d1ca263d0d
commit efb9352700
1 changed files with 3 additions and 5 deletions
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8
mm/slub.c
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@ -4890,6 +4890,9 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
s = find_mergeable(size, align, flags, name, ctor);
if (s) {
if (sysfs_slab_alias(s, name))
return NULL;
s->refcount++;
/*
@ -4898,11 +4901,6 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
*/
s->object_size = max(s->object_size, size);
s->inuse = max(s->inuse, ALIGN(size, sizeof(void *)));
if (sysfs_slab_alias(s, name)) {
s->refcount--;
s = NULL;
}
}
return s;